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In order to align a semiconductor chip for a subsequent level of assembly, an orientation aid is required.
English (United States)
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Chip Orientation Aid
In order to align a semiconductor chip for a subsequent level of assembly, an
orientation aid is required.
Fig. 1 is a chip active area illustrating a plurality of contact pads. Contact pad
10 is singled out by not completing its associated row and column of pads, thus
providing a means for orienting the chip. Fig. 2 illustrates a second technique by
which pad 10' has its adjacent pads omitted. The Fig. 2 technique provides 47
functional pads, while
In order to have 49 functional pads in a 7 x 7 matrix, the technique shown in
Fig. 3 can be used. The peripheral pads are elongated providing added heat
dissipation capability. Pad 10'' is an elongated octagon-shaped pad, like the
other peripheral pads, but it is rotated 45 Degrees from the others to provide the
desired orientation aid.
Page 2 of 2
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